I was able to hook the harness up in mine without removing the battery, and I am not a small guy! I'm not saying it was easy, and I'm not saying I didn't cut the crap out of myself on all the sharp aluminum inside the housing, but I did it.
It would be best to train a small monkey, or possibly a toddler, to hook up that last positive lead way down in the middle with the double spade connectors! Not fun!
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